In one aspect of the present disclosure, a locking device is provided including an interchangeable core (IC), a barrel, an anti-rotation plate, a prong driver, a bolt and a backplate. The barrel is coupled to the backplate and includes a hollow interior to receive the IC. The bolt is slidably disposed in a slot of the backplate. The IC includes a key hole. The prong driver is coupled to the IC and the bolt, such that, when a proper key is inserted into the key hole and rotated the bolt can be extended from the slot in a direction away from the locking device or retracted into the slot in a direction toward the interior of the locking device. The anti-rotation plate of the locking device is coupled to the barrel to prevent the locking device from being rotated relative to a structure the locking device is mounted to.

In one aspect of the present disclosure, a locking device is provided including an interchangeable core (IC), a barrel, an anti-rotation plate, a prong driver, a bolt and a backplate. The barrel is coupled to the backplate and includes a hollow interior to receive the IC. The bolt is slidably disposed in a slot of the backplate. The IC includes a key hole. The prong driver is coupled to the IC and the bolt, such that, when a proper key is inserted into the key hole and rotated the bolt can be extended from the slot in a direction away from the locking device or retracted into the slot in a direction toward the interior of the locking device. The anti-rotation plate of the locking device is coupled to the barrel to prevent the locking device from being rotated relative to a structure the locking device is mounted to.

A door lock system includes a shaft and a cam. The cam is supported on the shaft for rotation with the shaft, and for movement along the shaft throughout a range of door lock release locations. A selector engages the cam to move the cam along the shaft upon rotation of the selector. An actuator lock has a closed condition blocking rotation of the shaft, and has an open condition permitting rotation of the shaft. The actuator lock prevents rotation of the cam at any of the door lock release locations when the actuator lock is in the closed condition.

A door lock system includes a shaft and a cam. The cam is supported on the shaft for rotation with the shaft, and for movement along the shaft throughout a range of door lock release locations. A selector engages the cam to move the cam along the shaft upon rotation of the selector. An actuator lock has a closed condition blocking rotation of the shaft, and has an open condition permitting rotation of the shaft. The actuator lock prevents rotation of the cam at any of the door lock release locations when the actuator lock is in the closed condition.

Disclosed herein is a lock comprising a movably housed shackle stop, a shackle that is movably mounted and a shackle stop receiver for receiving the shackle stop to immobilise the shackle. The lock includes a shackle stop actuator is pivotable around a laterally orientated pivot axis and comprises a lateral cam surface configured to outwardly move the shackle stop into receipt by the shackle stop receiver. The lock includes a body configured to simultaneously receive a plurality of cylinder locks for actuation of the shackle stop actuator by any one of the plurality of cylinder locks.

Disclosed herein is a lock comprising a movably housed shackle stop, a shackle that is movably mounted and a shackle stop receiver for receiving the shackle stop to immobilise the shackle. The lock includes a shackle stop actuator is pivotable around a laterally orientated pivot axis and comprises a lateral cam surface configured to outwardly move the shackle stop into receipt by the shackle stop receiver. The lock includes a body configured to simultaneously receive a plurality of cylinder locks for actuation of the shackle stop actuator by any one of the plurality of cylinder locks.

A lock assembly for a door includes a lock mechanism moveable between an extended position wherein the door is locked and a retracted position wherein the door is unlocked such that the door may be opened and closed. The lock assembly also includes first and second lock cylinders operably connected to the lock mechanism such that actuation thereof causes the lock mechanism to move to the retracted position, the lock cylinders each including a first keyhole. A tamper resistant member is moveable between a protected position in which the keyhole of the second cylinder is inaccessible and an unprotected position in which the keyhole of the second cylinder is accessible, such that a tool is required in order to move the tamper resistant member from the protected position to the unprotected position, the tool adapted to be stored separately from the door.

A lock assembly for a door includes a lock mechanism moveable between an extended position wherein the door is locked and a retracted position wherein the door is unlocked such that the door may be opened and closed. The lock assembly also includes first and second lock cylinders operably connected to the lock mechanism such that actuation thereof causes the lock mechanism to move to the retracted position, the lock cylinders each including a first keyhole. A tamper resistant member is moveable between a protected position in which the keyhole of the second cylinder is inaccessible and an unprotected position in which the keyhole of the second cylinder is accessible, such that a tool is required in order to move the tamper resistant member from the protected position to the unprotected position, the tool adapted to be stored separately from the door.

This disclosure provides systems and methods for lockout-tagout procedures and systems supporting the same, including, without limitation, locking devices that can store and be locked simultaneously by multiple keyholders. In various embodiments, a single user can add multiple keyholders to a locking device. The user may not be able to remove anyone as a keyholder except himself or herself. Thus, the locking device may remain in a locked state until each of the added keyholders applies their digital key, password, PIN, and/or other personal identifying information to unlock the locking device by removing themselves as a keyholder.

Disclosed herein is a lock comprising a movably housed shackle stop, a shackle that is movably mounted and a shackle stop receiver for receiving the shackle stop to immobilise the shackle. The lock includes a shackle stop actuator is pivotable around a laterally orientated pivot axis and comprises a lateral cam surface configured to outwardly move the shackle stop into receipt by the shackle stop receiver. The lock includes a body configured to simultaneously receive a plurality of cylinder locks for actuation of the shackle stop actuator by any one of the plurality of cylinder locks.